| caption = [[William the Conqueror]], The Duke of Normandy in the [[Bayeux Tapestry]]. The name William became very popular in the English language after the [[Norman Conquest]] of [[1066]] by William the Conqueror.

| pronunciation = wiljəm

| gender = Male

| meaning = ''will + helmet (protection)''

| region = Germanic

| language = Germanic

| alternative spelling = Will.i.am

| nickname = [[Will]], [[Bill]], [[Billy]], [[Willy]]

| related names = [[Wilhelm]]

| name day = [[June 8]]

| popularity = if you say so

| footnotes = <ref>[http://www.babynames.co.uk/meaning_origin_name_William.htm William - Meaning and origin of the name William]</ref>